CN103014472A - Hard alloy with iron-nickel as binder metal and preparation method thereof - Google Patents
Hard alloy with iron-nickel as binder metal and preparation method thereof Download PDFInfo
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- CN103014472A CN103014472A CN2012105418912A CN201210541891A CN103014472A CN 103014472 A CN103014472 A CN 103014472A CN 2012105418912 A CN2012105418912 A CN 2012105418912A CN 201210541891 A CN201210541891 A CN 201210541891A CN 103014472 A CN103014472 A CN 103014472A
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Abstract
The invention relates to hard alloy with iron-nickel as binder metal and a preparation method thereof. The binder metal powder is iron-nickel alloy powder; the iron-nickel alloy powder is spherical; the grain size is smaller than or equal to 4 microns; the iron-nickel alloy powder is prepared from 50-80% of iron element and 20-50% of nickel element; the alloy powder phase is composed of austenite and martensite; and the hard alloy comprises the following components in percentage by weight: 80-97% of WC powder, and 3-20% of Fe-Ni alloy powder. The preparation method comprises the steps of firstly, wetly grinding and mixing the WC powder and Fe-Ni alloy powder in a solvent in preparation, and then drying, molding and sintering. The hard alloy employing the iron-nickel alloy as the binder metal has better strength/toughness ratio, can be widely applied to the fields such as engineering geology and mining, compared with the traditional tungsten carbide-cobalt hard alloy; not only can application of strategic resource cobalt be reduced, but also the service life of a hard alloy tool can be prolonged.
Description
Technical field
The present invention relates to a kind of Wimet take iron nickel as matrix metal and preparation method thereof, this Wimet is for the manufacture of the instrument in the fields such as rock drilling, geological drilling.
Background technology
Wimet is a class matrix material of being made through powder metallurgy process by refractory metal hard compounds (hard phase) and metal adhesive (Binder Phase).Cobalt is owing to have good wettability to carbide, and with alloy that carbide forms higher intensity arranged, and therefore, since Wimet comes out, has been widely used as the matrix metal of Wimet always.Yet because world's cobalt resource is very limited, in addition, Wimet in use cobalt might be oxidized to the virose Co of tool
6+, HUMAN HEALTH is caused potential threat, therefore, the equivalent material of seeking and study cobalt always is exactly important topic in Wimet research and the production.The iron nickel element of the same clan with cobalt is usually used to attempt all or part of replacement cobalt, still, because of the mechanical property of iron and nickel more much lower than cobalt.In recent years, there is the Wimet that mixes as the Binder Phase of Wimet with pure iron, pure nickel or iron cobalt, iron nickel on a small quantity to occur, but the physical and mechanical properties of resulting Wimet is very low, can only be used for the operating mode of specific function purposes, can't satisfy domain requirements such as the higher rock drilling probing of mechanical property, punching press grindings.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of Wimet take iron nickel as matrix metal and preparation method thereof is provided, be intended to the cohesive strength of Effective Raise matrix metal and carbide, solve matrix metal undercapacity problem, significantly improve the mechanical property of Wimet, increase the service life.
Purpose of the present invention is achieved through the following technical solutions:
Wimet take iron nickel as matrix metal, its component has following weight percent: WC powder 80～97%, Fe-Ni alloy powder 3～20%.
Further, the above-mentioned Wimet take iron nickel as matrix metal, wherein, the granularity of described WC powder is less than 10 μ m.
Further, the above-mentioned Wimet take iron nickel as matrix metal, wherein, the weight percentages of components of described Fe-Ni alloy powder is: Fe 50～80%, and Ni 20～50%; Described Fe-Ni alloy powder is comprised of austenite and martensite; Phase composite is austenite 65%, martensite 35%; Described Fe-Ni alloy powder is spherical; The particle diameter of described Fe-Ni alloy powder is less than 4 μ m.
The preparation method of the Wimet of the present invention take iron nickel as matrix metal, wet-milling in solvent mixes with WC powder and Fe-Ni alloy powder first, and is then dry, moulding, sintering.
Again further, the preparation method of the above-mentioned Wimet take iron nickel as matrix metal, described solvent is the mixture that alcohol, acetone, hexane, water or arbitrary combination wherein form.
The substantive distinguishing features that technical solution of the present invention is outstanding and significant progressive being mainly reflected in:
Owing to Fe, Ni have been carried out Alloying Treatment, have improved the intensity of Fe-Ni alloy.In addition, Fe-Ni is spherical, is conducive to shorten the ball milling mixing time with the WC powder, thereby has improved grinding efficiency.Simultaneously because the Fe-Ni alloy is preferably face-centered cubic crystal structure of toughness, than Co Patterns for Close-Packed Hexagonal Crystal structure at normal temperatures, have better toughness, therefore, the Wimet made from the Fe-Ni alloy powder has higher toughness than traditional WC-Co alloy.In addition, replace rare Co to do matrix metal with the Fe-Ni alloy powder, reduced the application of rare metal Co, reduced Co
6+To the harm of HUMAN HEALTH, has higher economic and social benefit.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: iron-nickel alloy matrix metal powder scanning electron microscope (SEM) photograph of the present invention;
Fig. 2: the Wimet metallograph of the present invention take iron-nickel alloy as matrix metal.
Embodiment
For effectively solving the problem that Wimet substitutes matrix metal mechanical property deficiency, the present invention strengthens the Fe-Ni matrix metal by the alloying approach, and the phase composite of control alloy, thereby reaches the purpose that Wimet intensity and toughness are provided.
Wimet take iron nickel as matrix metal, its component has following weight percent: WC powder 80～97%, Fe-Ni alloy powder 3～20%, wherein, the granularity of WC powder is less than 10 μ m, and the weight percentages of components of Fe-Ni alloy powder is: Fe 50～80%, Ni 20～50%, the Fe-Ni alloy powder is comprised of austenite and martensite, and phase composite is austenite 65%, martensite 35%; The Fe-Ni alloy powder is spherical, and the particle diameter of Fe-Ni alloy powder is less than 4 μ m.
The preparation technology of the Wimet take iron nickel as matrix metal is: wet-milling in solvent mixes with WC powder and Fe-Ni alloy powder first, and solvent is the mixture that alcohol, acetone, hexane, water or arbitrary combination wherein form, and is then dry, moulding, sintering.
Take WC as hard phase, take 3～20%(weight ratio) Fe-Ni is matrix metal.This matrix metal is the Fe-Ni metal of alloying, and Fe, Ni are that atom level is mixed, and wherein the Fe proportion is that 50～80%, Ni is 20～50%.Fe-Ni alloy powder wettability to WC in the vacuum liquid situation is better, and phase composite is face-centred cubic austenite and martensite (wherein austenite is 65%, and martensite is 35%), is conducive to guaranteeing when alloy has higher-strength higher toughness is arranged also.In order to make Fe-Ni alloy powder and WC powder be easy to mix, the Fe-Ni alloy powder is made sphere, granularity＜4 μ m.This novel Wimet WC powder mixes in the wet-milling mode with the Fe-Ni powder, and abrasive is alcohol, acetone, hexane, water or the mixture of arbitrary combination wherein.After the mixed slurry drying, repressed moulding has higher value density in order to guarantee alloy, sintering adopts pressure sintering, the metallographic of alloy such as Fig. 2 behind the sintering have same structure with the WC-Co Wimet, and made product performance have the hardness/Toughness Ratio higher than WC-Co alloy.
Embodiment
Adopting granularity is the superfine WC power of 1.0 μ m and the Fe-Ni alloy powder (alloy powder pattern photo such as Fig. 1) that granularity is 1.2 μ m, join powder by weight WC:Fe-Ni=9:1, ratio of grinding media to material is 3.5:1, abrasive adopts alcohol, the ratio that adds 350ml in the per kilogram powder adds, through ball milling after 48 hours, powder is dry under 120 ℃ temperature, the powder drying is by mixing forming agent, press forming, taking off in forming agent and sintering integrated low pressure (10MPa) sintering oven at 1390 ℃ of lower sintering 60min, make hard metal article.
Comparative Examples
Except binding agent belongs to difference, in other conditions situation consistent with embodiment, make the WC-Co alloy product to compare.
After testing, the performance comparison of the Wimet that makes of embodiment and Comparative Examples alloy is as shown in table 1.
Table 1 embodiment and the tabulation of Comparative Examples alloy property
Can find out from the listed Data Comparison of table 1, adopt the prepared Cemented Carbide Hardness of technical scheme of the present invention, intensity and WC-Co alloy phase to work as, the alloy fracture toughness value that embodiment makes and wear resistance are then apparently higher than the Comparative Examples alloy, the city is observed after the match at 100 * opticmicroscope, and embodiment and Comparative Examples are not all found visible hole.
The present invention has improved the intensity of Fe-Ni alloy because Fe, Ni have been carried out Alloying Treatment.In addition, Fe-Ni is spherical, is conducive to shorten the ball milling mixing time with the WC powder, thereby has improved grinding efficiency.Simultaneously because the Fe-Ni alloy is preferably face-centered cubic crystal structure of toughness, than Co Patterns for Close-Packed Hexagonal Crystal structure at normal temperatures, have better toughness, therefore, the Wimet made from the Fe-Ni alloy powder has higher toughness than traditional WC-Co alloy.In addition, replace rare Co to do matrix metal with the Fe-Ni alloy powder, reduced the application of rare metal Co, reduced Co
6+To the harm of HUMAN HEALTH, has higher economic and social benefit.
Adopting iron-nickel alloy is the Wimet of matrix metal, compare with traditional W-Co carbide hard metals, has better intensity/Toughness Ratio, can be widely used in the use of the field Wimet such as engineering geology, mining, not only can save the application of strategic resource cobalt, also can prolong the work-ing life of carbamide tool, have a good application prospect.
What need to understand is: the above only is preferred implementation of the present invention; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the Wimet take iron nickel as matrix metal is characterized in that its component has following weight percent: WC powder 80～97%, Fe-Ni alloy powder 3～20%.
2. the Wimet take iron nickel as matrix metal according to claim 1, it is characterized in that: the granularity of described WC powder is less than 10 μ m.
3. the Wimet take iron nickel as matrix metal according to claim 1, it is characterized in that: the weight percentages of components of described Fe-Ni alloy powder is: Fe 50～80%, and Ni 20～50%.
4. the Wimet take iron nickel as matrix metal according to claim 1, it is characterized in that: described Fe-Ni alloy powder is comprised of austenite and martensite.
5. the Wimet take iron nickel as matrix metal according to claim 4, it is characterized in that: phase composite is austenite 65%, martensite 35%.
6. the Wimet take iron nickel as matrix metal according to claim 1 is characterized in that: described Fe-Ni alloy powder is for spherical.
7. the Wimet take iron nickel as matrix metal according to claim 1, it is characterized in that: the particle diameter of described Fe-Ni alloy powder is less than 4 μ m.
8. the preparation method of the Wimet take iron nickel as matrix metal claimed in claim 1 is characterized in that: wet-milling in solvent mixes with WC powder and Fe-Ni alloy powder first, and is then dry, moulding, sintering.
9. the preparation method of the Wimet take iron nickel as matrix metal according to claim 8, it is characterized in that: described solvent is the mixture that alcohol, acetone, hexane, water or arbitrary combination wherein form.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195731A (en) * | 2015-09-09 | 2015-12-30 | 苏州晓谕精密机械股份有限公司 | Hard alloy material for rack |
| CN106906397A (en) * | 2017-01-17 | 2017-06-30 | 株洲三鑫硬质合金生产有限公司 | Iron nickel for cobalt, titanium for part tungsten novel hard alloy and its production technology |
| CN107805749A (en) * | 2017-08-11 | 2018-03-16 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline cubic boron nitride complex |
| US20180142331A1 (en) * | 2016-11-10 | 2018-05-24 | U.S. Army Research Laboratory Attn: Rdrl-Loc-I | Cemented carbide containing tungsten carbide and finegrained iron alloy binder |
| AT522605A1 (en) * | 2019-05-23 | 2020-12-15 | Boehlerit Gmbh & Co Kg | Carbide insert |
| CN115433863A (en) * | 2022-10-09 | 2022-12-06 | 株洲金信硬质合金集团股份有限公司 | Corrosion-resistant and wear-resistant hard alloy and preparation process thereof |
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| CN1144277A (en) * | 1995-08-25 | 1997-03-05 | 东芝图格莱株式会社 | Plate-crystalline tungsten carbide-containing hard alloy, composition for forming plate-crystalline tungsten carbide and process for preparing said hard alloy |
| CN1174247A (en) * | 1997-06-14 | 1998-02-25 | 邓勇 | Tungsten carbide based hard alloy powder for spray welding (painting) and its production process |
| CN1479796A (en) * | 2000-12-22 | 2004-03-03 | ƻ����������˾ | Coated cutting tool insert with iron-nickel based binder phase |
| CN101301686A (en) * | 2008-07-01 | 2008-11-12 | 四川大学 | Fe/Ni-based carbide alloy coating cutter material for cutting rolled steel and preparation thereof |
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2012
- 2012-12-14 CN CN2012105418912A patent/CN103014472A/en active Pending
Patent Citations (4)
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| CN1144277A (en) * | 1995-08-25 | 1997-03-05 | 东芝图格莱株式会社 | Plate-crystalline tungsten carbide-containing hard alloy, composition for forming plate-crystalline tungsten carbide and process for preparing said hard alloy |
| CN1174247A (en) * | 1997-06-14 | 1998-02-25 | 邓勇 | Tungsten carbide based hard alloy powder for spray welding (painting) and its production process |
| CN1479796A (en) * | 2000-12-22 | 2004-03-03 | ƻ����������˾ | Coated cutting tool insert with iron-nickel based binder phase |
| CN101301686A (en) * | 2008-07-01 | 2008-11-12 | 四川大学 | Fe/Ni-based carbide alloy coating cutter material for cutting rolled steel and preparation thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195731A (en) * | 2015-09-09 | 2015-12-30 | 苏州晓谕精密机械股份有限公司 | Hard alloy material for rack |
| US20180142331A1 (en) * | 2016-11-10 | 2018-05-24 | U.S. Army Research Laboratory Attn: Rdrl-Loc-I | Cemented carbide containing tungsten carbide and finegrained iron alloy binder |
| CN106906397A (en) * | 2017-01-17 | 2017-06-30 | 株洲三鑫硬质合金生产有限公司 | Iron nickel for cobalt, titanium for part tungsten novel hard alloy and its production technology |
| CN107805749A (en) * | 2017-08-11 | 2018-03-16 | 武汉新锐合金工具有限公司 | A kind of carbide matrix material of polycrystalline cubic boron nitride complex |
| AT522605A1 (en) * | 2019-05-23 | 2020-12-15 | Boehlerit Gmbh & Co Kg | Carbide insert |
| AT522605B1 (en) * | 2019-05-23 | 2021-02-15 | Boehlerit Gmbh & Co Kg | Carbide insert |
| CN115433863A (en) * | 2022-10-09 | 2022-12-06 | 株洲金信硬质合金集团股份有限公司 | Corrosion-resistant and wear-resistant hard alloy and preparation process thereof |
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Application publication date: 20130403 |